| 摘要 |
FIELD: agriculture. ^ SUBSTANCE: invention refers to the sphere of agricultural engineering industry. The frame consists of a hitch tongue, a central section, left and right side sections, bracing pieces, clamps and mechanisms bringing the side sections to the transport position. The frame is equipped with low pressure wide cross-section tyres and a mechanism lifting the hitch tongue and the sections to the transport position. The above mechanism lifting the hitch tongue and the sections is a hydraulically driven four-link mounted on the hitch tongue with the help of a transport beam. Each bracing piece is pivotally connected to the hitch tongue and a side section and is equipped with a cord. When the frame is in the transport position the cord is brought to the travelling position. The mechanism bringing the side sections to the transport position consists of a hydraulic power cylinder, a hinge joint (including a pin, a silent block and a C-shaped element) and a multi-purpose Hooke's joint at the point of the side section turn against the central one. The invention ensures minimisation of labour and time expenditures combined with enhanced operational reliability. ^ EFFECT: minimisation of labour and time expenditures combined with enhanced operational reliability. ^ 14 dwg |
